package com.heima.behavior.service.impl;

import com.alibaba.fastjson.JSON;
import com.heima.behavior.service.ApBehaviorEntryService;
import com.heima.behavior.service.ApReadBehaviorService;
import com.heima.common.exception.CustException;
import com.heima.model.behavior.dtos.ReadBehaviorDTO;
import com.heima.model.behavior.pojos.ApBehaviorEntry;
import com.heima.model.behavior.pojos.ApReadBehavior;
import com.heima.model.common.constants.article.HotArticleConstants;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.mess.app.UpdateArticleMess;
import com.heima.model.threadlocal.AppThreadLocalUtils;
import com.heima.model.user.pojos.ApUser;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Service;

import java.util.Date;

@Service
@Slf4j
public class ApReadBehaviorServiceImpl implements ApReadBehaviorService {
    @Autowired
    MongoTemplate mongoTemplate;

    @Autowired
    ApBehaviorEntryService apBehaviorEntryService;

    @Autowired
    RabbitTemplate rabbitTemplate;

    /**
     * 记录阅读行为
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult readBehavior(ReadBehaviorDTO dto) {
//        1. 校验参数 文章id必须传
        if (dto == null) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
        }
        if (dto.getArticleId() == null) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID, "文章id不能为空");
        }
//        2. 根据登录用户id 或 设备id查询行为实体数据(阅读操作可不登录)
        ApUser user = AppThreadLocalUtils.getUser();
        if (user == null) {
            if (dto.getEquipmentId() != null) {
                //2.1 用户未登录
                ApBehaviorEntry entry = apBehaviorEntryService.findByUserIdOrEquipmentId(null, dto.getEquipmentId());
                return getResponseResult(dto,entry.getId());
            }
            CustException.cust(AppHttpCodeEnum.SERVER_ERROR);
        }
        // 2.2 用户登录
        ApBehaviorEntry entry = apBehaviorEntryService.findByUserIdOrEquipmentId(user.getId(), dto.getEquipmentId());
        if (entry == null){
            CustException.cust(AppHttpCodeEnum.SERVER_ERROR);
        }
        return getResponseResult(dto, entry.getId());
    }

    private ResponseResult getResponseResult(ReadBehaviorDTO dto, String entryId) {
        //        3. 判断阅读行为是否存在
        Query query = Query.query(Criteria.where("entryId").is(entryId)
                .and("articleId").is(dto.getArticleId()));
        ApReadBehavior apReadBehavior = mongoTemplate.findOne(query, ApReadBehavior.class);
        if (apReadBehavior != null) {
            // 4. 存在  将阅读行为的count字段加1 并修改
            Short count = apReadBehavior.getCount();
            apReadBehavior.setCount((short) (count + 1));
            mongoTemplate.save(apReadBehavior);
        }
        //  5. 不存在  创建阅读行为 并初始化count字段值为 1
        ApReadBehavior readBehavior = new ApReadBehavior();
        readBehavior.setEntryId(entryId);
        readBehavior.setArticleId(dto.getArticleId());
        readBehavior.setCount((short) 1);
        readBehavior.setReadDuration(dto.getReadDuration());
        readBehavior.setPercentage(dto.getPercentage());
        readBehavior.setLoadDuration(dto.getLoadDuration());
        readBehavior.setCreatedTime(new Date());
        readBehavior.setUpdatedTime(new Date());
        mongoTemplate.save(readBehavior);

        UpdateArticleMess mess = new UpdateArticleMess();
        mess.setType(UpdateArticleMess.UpdateArticleType.VIEWS);
        mess.setArticleId(dto.getArticleId());
        mess.setAdd(1);
        rabbitTemplate.convertAndSend(HotArticleConstants.HOT_ARTICLE_SCORE_BEHAVIOR_QUEUE, JSON.toJSONString(mess));
        log.info(" 成功发送 文章阅读行为 消息  ===> 行为内容: {} ",mess);



        return ResponseResult.okResult(readBehavior);
    }
}
